Hi Kunal,

its impossible to access I2C memory like any external memory.

Because I2C was much slower than a MOVX instruction. So you need always a subroutine to write or read a single byte.

Also since reading and writing a couple of bytes on the I2C bus can be done much faster, it would suggest to have routines for block read and write.

So if you use a FPGA to realize the I2C bus, you need nevertheless something like a busy polling to detect, if the I2C read or write was completed.

But I have never seen, that a FPGA or CPLD implement a complete I2C bus transfer cycle.

Only the I2C basic functions (start, write or read byte, acknowledge, stop) are implemented.


Peter